Motion-converting mechanism



No. 24,93|. Patented May l I899.

W. HAY. MDTNJN CONVERTING MECHANISM. (Application filed Apr. 4, 1898.)

(No Model.) 2 Sheels8heet I.

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Patented May [6, I899. w. HAY. MOTION CONVERTING MECHANISM.

(Application filed Apr. 4, 1898.)

2 Sheets-Sheet 2.

(No Model.)

IINTTET) STATES l PATENT OF ICE.

WALTER HAY, OF SEVILLE, OHIO, ASSIGNOR OF ONE-HALF 'TO EMERSON M.HOTCHKISS, OF WATERBURY, CONNECTICUT.

MOTION-CONVERTING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 624,931 dated May 16,1899.

Application filed April 4, 1898. Serial No. 676,296. (No model.)

To aZZ whom, itmay concern.-

Be it known that I, WALTER HAY, a citizen of the United States ofAmerica, and a resident of Seville, in the county of Medina, State ofOhio, haveinvented certain newand useful Improvements inMotion-Converting-Mechanism, of which the following is a specification.

My invention relates to improvements in engine construction, moreparticularly adapted for motors, pumps, compressors, 850. ,whichcomprise tandem-coupled cylinders and a crank-shaft arranged inoperative connection with the reciprocating pistons of said cylinders;and the objectof my improvement is to relieve such pistons of thethrusts or strains which heretofore have been experienced in theoperation thereof. substantially in the manner and by the means asillustrated in the accompanying drawings, in whichv Figure 1 representsa part-sectional and part-exterior view of a pair of single-actingtandem-arranged yoke and crank operatingor operated cylinders providedwith the improvements above referred to. Fig. 2 is a partial plan viewof same.

view of same on line 0050. (See Fig. 1.) Fig.

4 represents a part-sectional and part-eXte-' rior view of another pairof tandem-arranged yoke, connecting-rod, and crank operating or operatedcylinders improved in like manner. Fig. 5 illustrates a part-plan andpart-sectional view of same. Fig. 6 is a cross-sectional view on line y3 (See Fig. 4)

Like letters of reference denote like parts in the drawings andspecification.

The essential feature of my invention consists in the application ofintegral differential rollers in connection with elementary engineconstruction of such or similar type as shown in the accompanyingdrawings.

In the construction illustrated in Figs. 1, 2, and 3, A A representpartial views of the working cylinders, between which is placed thecrank-shaft B. The yoke C is adapted for operative connection with thepistons D of said cylinders with and by the intervention of thecrank-pin E of said shaft. The rods F F of the pistons are hinged tosaid yoke, as seen at a a, while the pin E is embraced by blocks 1) b,which move within said yoke.

I attain this object.

Fig. 3 is a cross-sectional (See Fig.1.) Parallel to or with the centerline of the cylinders extend the guides c c from each side of the yoke.are shown united simply to render the structure more rigid. (See Figs. 1and 3.) Adj ustably attached to each side of the cylinders, near theendthereof, is shown a bifurcated bracket G,between which and theabovementioned guides is placed a roller H, which consists of the majormember (1 and the minor members e e. The brackets are adjusted inrelation to the yoke-guides to maintain the major member (1 of therollers in contact with the guides and the minor members 6 in contactwith the inner faces f of the brackets. Under such conditions therollers will. move in unison with the yoke-guides but the ratio of thelinear travel of the rollers to that of the yoke is identical with thedifference in circumference between the major rollers and the minorones. If thus, for instance, the stroke of the yoke equals thecircumference of the roll part (15, then therollers proper will movewithin a distance equal to the circumference of the minor rollers e e.Only a limited movement of the rollers is required to answer the purposeof subduing friction to a minimum. The conversion of reciprocatingmotion. of the piston into rotary motion of the crank-shaft causes moreor less severe angular thrusts or even cross-heads, guided between orupon compound rollers arranged substantially as shown, avoidingv strainsand requiring nolubrication, constitute an essential feature in engineconstructions for motor-carriages, &c.

In the construction illustrated in Figs. 4, 5, and 6 the rods 1 areemployed'for connection of the shaft E with the outer ends 9 of the yokeC. The roller-retaining brackets At 0' said guides are embodied incontinuous bars G, reaching from one cylinder end to the other, and thepiston-rods F are connected with the yokesubstantially as those shown inFig. 1.

It is evident that compound rollers are useful in convertingreciprocating motion into rotary motion as Well as in converting rotarymotion into reciprocating motion, and such means may be applied in manysimilar kinds of engine constructions Without departing from the natureof my invention.

What I claim, and desire to secure by Letters Patent, is

1. In engine constructions the combination with tandem-arrangedcylinders and the pistons thereof of a yoke connecting with the rods ofsaid pistons, a crank-shaft rotated by said yoke, guides extending fromeach side of said yoke, adjustable and yieldingly-supported brackets orbars retained normally in parallel position to said guides and integraldifferential rollers establishing rolling contact with and of saidguides and brackets or bars for the purpose as set forth.

2. The combination with tandem-arranged cylinders and the pistonsthereof of a pistonrod connecting guide-yoke, connecting-rods day ofMarch, 1898. p v

WALTER HAY. Witnesses:

BERNH. F. EIBLER, MoRITz REINHARD.

